TFT array substrate, display panel and display device

Abstract

A TFT array substrate is disclosed. The substrate includes a plurality of gate lines, and a first gate drive circuit, where the first gate drive circuit includes m levels of first repeat units. Each level of first repeat unit includes a first shift register. The substrate also includes a second gate drive circuit, where the second gate drive circuit includes n levels of second repeat units. Each level of second repeat unit includes a second shift register. The substrate also includes a first start signal line and a first start transistor, where a drain of the first start transistor is electrically connected with the first start signal line. The substrate also includes a second start transistor, where a drain of the second start transistor is electrically connected with the first start signal line.

What is claimed is: 
     
       1. A thin film transistor (TFT) array substrate, comprising:
 a plurality of gate lines; a first gate drive circuit, wherein the first gate drive circuit comprises m levels of first repeat units, wherein the m levels of first repeat units further comprise a first level of first repeat unit to an m-th level of first repeat unit sequentially arranged, 
 wherein each level of the m levels of first repeat units further comprises a first shift register, wherein the first shift register further comprises a first input terminal and a first output terminal connected with a corresponding gate line; 
 a second gate drive circuit, wherein the second gate drive circuit comprises n levels of second repeat units, wherein the n levels of second repeat units further comprise a first level of second repeat unit to an n-th level of second repeat unit sequentially arranged, 
 wherein each level of the n levels of second repeat units further comprises a second shift register, wherein the second shift register further comprises a second input terminal and a second output terminal connected with a corresponding gate line; 
 a first start signal line; 
 a first start transistor, wherein a drain of the first start transistor is electrically connected with the first start signal line, a source of the first start transistor is electrically connected with the first input terminal of the first shift register of the first level of first repeat unit, and a gate of the first start transistor is electrically connected with a first control line; and 
 a second start transistor, wherein a drain of the second start transistor is electrically connected with the first start signal line, a source of the second start transistor is electrically connected with the second input terminal of the second shift register of the first level of second repeat unit, and a gate of the second start transistor is electrically connected with a second control line, wherein in the m levels of first repeat units, among the second to m-th levels of first repeat units, the first input terminal of the first shift register in an i-th level of first repeat unit is electrically connected with the first output terminal of the first shift register in the (i−1)-th level of first repeat unit, and 
 wherein in the n levels of second repeat units, among the second to n-th levels of second repeat units, the second input terminal of the second shift register in an i-th level of second repeat unit is electrically connected with the second output terminal of the second shift register in the (i−1)-th level of second repeat unit and wherein m, n and i are positive integers, and i is greater than or equal to 2 and less than or equal to at least one of m and n, and 
 wherein a frame comprises a first period of time and a second period of time, wherein: in two dimensional (2D) display: during the first period of time and during the second period of time, the first control line controls the first start transistor to be turned on, and the second control line controls the second start transistor to be turned on; and 
 in three dimensional (3D) display: during the first period of time, the first control line controls the first start transistor to be turned on, and the second control line controls the second start transistor to be turned off; and during the second period of time, the first control line controls the first start transistor to be turned off and the second control line controls the second start transistor to be turned on, and 
 wherein the TFT array substrate further comprises a first clock signal line, a first clock transistor, a second clock transistor, a second clock signal line, a third clock transistor, and a fourth clock transistor, 
 wherein the first shift register further comprises a first clock signal terminal, and a third clock signal terminal, 
 wherein the second shift register further comprises a second clock signal terminal and a fourth clock signal terminal, 
 wherein: in each level of first repeat unit: a drain of the first clock transistor is electrically connected with the first clock signal line, a gate of the first clock transistor is electrically connected with the first control line, and a source of the first clock transistor is electrically connected with the first clock signal terminal; and 
 a drain of the third clock transistor is electrically connected with the second clock signal line, a gate of the third clock transistor is electrically connected with the first control line, and a source of the third clock transistor is electrically connected with the third clock signal terminal; and 
 in each level of second repeat unit: a drain of the second clock transistor is electrically connected with the first clock signal line, a gate of the second clock transistor is electrically connected with the second control line, and a source of the second clock transistor is electrically connected with the second clock signal terminal; and a drain of the fourth clock transistor is electrically connected with the second clock signal line, a gate of the fourth clock transistor is electrically connected with the second control line, and a source of the fourth clock transistor is electrically connected with the fourth clock signal terminal, and 
 wherein: in the 2D display: during the first period of time and during the second period of time: the first control line controls the first clock transistor and the third clock transistor to be turned on, and the second control line controls the second clock transistor and the fourth clock transistor to be turned on; and in the 3D display: during the first period of time: the first control line controls the first clock transistor and the third clock transistor to be turned on, and the second control line controls the second clock transistor and the fourth clock transistor to be turned off; and during the second period of time: the first control line controls the first clock transistor and the third clock transistor to be turned off, and the second control line controls the second clock transistor and the fourth clock transistor to be turned on. 
 
     
     
       2. A thin film transistor (TFT) array substrate, comprising:
 a plurality of gate lines; 
 a first gate drive circuit, wherein the first gate drive circuit comprises m levels of first repeat units, wherein the m levels of first repeat units further comprise a first level of first repeat unit to an m-th level of first repeat unit sequentially arranged, wherein each level of the m levels of first repeat units further comprises a first shift register, wherein the first shift register further comprises a first input terminal and a first output terminal connected with a corresponding gate line; 
 a second gate drive circuit, wherein the second gate drive circuit comprises n levels of second repeat units, wherein the n levels of second repeat units further comprise a first level of second repeat unit to an n-th level of second repeat unit sequentially arranged, wherein each level of the n levels of second repeat units further comprises a second shift register, wherein the second shift register further comprises a second input terminal and a second output terminal connected with a corresponding gate line; 
 a first start signal line; a first start transistor, wherein a drain of the first start transistor is electrically connected with the first start signal line, a source of the first start transistor is electrically connected with the first input terminal of the first shift register of the first level of first repeat unit, and a gate of the first start transistor is electrically connected with a first control line; and 
 a second start transistor, wherein a drain of the second start transistor is electrically connected with the first start signal line, a source of the second start transistor is electrically connected with the second input terminal of the second shift register of the first level of second repeat unit, and a gate of the second start transistor is electrically connected with a second control line, 
 wherein in the m levels of first repeat units, among the second to m-th levels of first repeat units, the first input terminal of the first shift register in an i-th level of first repeat unit is electrically connected with the first output terminal of the first shift register in the (i−1)-th level of first repeat unit, and 
 wherein in the n levels of second repeat units, among the second to n-th levels of second repeat units, the second input terminal of the second shift register in an i-th level of second repeat unit is electrically connected with the second output terminal of the second shift register in the (i−1)-th level of second repeat unit, and 
 wherein m, n and i are positive integers, and i is greater than or equal to 2 and less than or equal to at least one of m and n, and 
 wherein a frame comprises a first period of time and a second period of time, wherein: in two dimensional (2D) display: during the first period of time and during the second period of time, the first control line controls the first start transistor to be turned on, and the second control line controls the second start transistor to be turned on; and 
 in three dimensional (3D) display: during the first period of time, the first control line controls the first start transistor to be turned on, and the second control line controls the second start transistor to be turned off; and during the second period of time, the first control line controls the first start transistor to be turned off and the second control line controls the second start transistor to be turned on, and 
 wherein the TFT array substrate further comprises a first signal line, a first transistor and a second transistor; and the first shift register further comprises a first terminal, and the second shift register further comprises a second terminal, 
 wherein: in the each level of first repeat unit, a drain of the first transistor is electrically connected with the first signal line, a gate of the first transistor is electrically connected with the first control line, and a source of the first transistor is electrically connected with the first terminal; and 
 in each level of the second repeat unit, a drain of the second transistor is electrically connected with the first signal line, a gate of the second transistor is electrically connected with the second control line, and a source of the second transistor is electrically connected with the second terminal, 
 wherein: in the 2D display: during the first period of time and during the second period of time, the first control line controls the first transistor to be turned on, and the second control line controls the second transistor to be turned on; and 
 in the 3D display: during the first period of time, the first control line controls the first transistor to be turned on, and the second control line controls the second transistor to be turned off, and during the second period of time, the first control line controls the first transistor to be turned off, and the second control line controls the second transistor to be turned on. 
 
     
     
       3. The TFT array substrate according to  claim 2 , wherein at least one of:
 the first signal line outputs a pre-scan reset signal; 
 the first signal line outputs a constant high level signal; 
 the first signal line outputs a constant low level signal; 
 the first signal line outputs a forward scan signal; and 
 the first signal line outputs a backward scan signal. 
 
     
     
       4. The TFT array substrate according to  claim 1 , further comprising a low level signal line, a first clock switch, a second clock switch, a third clock switch and a fourth clock switch, wherein:
 the first clock signal terminal of the first shift register in the first level of first repeat unit is further electrically connected with the low level signal line through the first clock switch, and the third clock signal terminal of the first shift register in the first level of first repeat unit is further electrically connected with the low level signal line through the third clock switch; and 
 the second clock signal terminal of the second shift register in the first level of second repeat unit is further electrically connected with the low level signal line through the second clock switch, and the fourth clock signal terminal of the second shift register in the first level of second repeat unit is further electrically connected with the low level signal line through the fourth clock switch, wherein: 
 in 2D display: 
 during the first period of time and during the second period of time, the first clock switch, the second clock switch, the third clock switch and the fourth clock switch are turned off; and 
 in 3D display; 
 during the first period of time, the first clock switch and the third clock switch are turned off, and the second clock switch and the fourth clock switch are turned on, and 
 during the second period of time, the first clock switch and the third clock switch are turned on, and the second clock switch and the fourth clock switch are turned off. 
 
     
     
       5. The TFT array substrate according to  claim 2 , further comprising a low level signal line, a first signal switch and a second signal switch, wherein:
 the first terminal of the first shift register in the first level of first repeat unit is further electrically connected with the low level signal line through the first signal switch; and 
 the second terminal of the second shift register in the first level of second repeat unit is further electrically connected with the low level signal line through the second signal switch, wherein: 
 in 2D display: 
 during the first period of time and during the second period of time, the first signal switch and the second signal switch are turned off; and 
 in 3D display: 
 during the first period of time, the first signal switch is turned off, and the second signal switch is turned on, and 
 during the second period of time, the first signal switch is turned on, and the second signal switch is turned off. 
 
     
     
       6. A display panel, comprising:
 a thin film transistor (TFT) array substrate, wherein the TFT array substrate further comprises: 
 a plurality of gate lines; a first gate drive circuit, wherein the first gate drive circuit comprises m levels of first repeat units, wherein the m levels of first repeats units further comprise a first level of first repeat unit to an m-th level of first repeat unit sequentially arranged, 
 wherein each level of the m levels of first repeat units further comprises a first shift register, wherein the first shift register further comprises a first input terminal and a first output terminal connected with a corresponding gate line; 
 a second gate drive circuit, wherein the second gate drive circuit comprises n levels of second repeat units, wherein the n levels of second repeat units further comprise a first level of second repeat unit to an n-th level of second repeat unit sequentially arranged, wherein each level of the n levels of second repeat units further comprises a second shift register, wherein the second shift register further comprises a second input terminal and a second output terminal connected with a corresponding gate line; 
 a first start signal line; 
 a first start transistor, wherein a drain of the first start transistor is electrically connected with the first start signal line, a source of the first start transistor is electrically connected with the first input terminal of the first shift register of the first level of first repeat unit, and a gate of the first start transistor is electrically connected with a first control line; and 
 a second start transistor, wherein a drain of the second start transistor is electrically connected with the first start signal line, a source of the second start transistor is electrically connected with the second input terminal of the second shift register of the first level of second repeat unit, and a gate of the second start transistor is electrically connected with a second control line, wherein in the m levels of first repeat units, among the second to m-th levels of first repeat units, the first input terminal of the first shift register in an i-th level of first repeat unit is electrically connected with the first output terminal of the first shift register in the (i−1)-th level of first repeat unit, and 
 wherein in the n levels of second repeat units, among the second to n-th levels of second repeat units, the second input terminal of the second shift register in an i-th level of second repeat unit is electrically connected with the second output terminal of the second shift register in the (i−1)-th level of second repeat unit, and wherein m, n and i are positive integers, and i is greater than or equal to 2 and less than or equal to at least one of m and n, and 
 wherein a frame comprises a first period of time and a second period of time, wherein: in two dimensional (2D) display: during the first period of time and during the second period of time, the first control line controls the first start transistor to be turned on, and the second control line controls the second start transistor to be turned on; and 
 in three dimensional (3D) display: during the first period of time, the first control line controls the first start transistor to be turned on, and the second control line controls the second start transistor to be turned off; and during the second period of time, the first control line controls the first start transistor to be turned off and the second control line controls the second start transistor to be turned on, and 
 wherein the TFT array substrate further comprises a first clock signal line, a first clock transistor, a second clock transistor, a second clock signal line, a third clock transistor, and a fourth clock transistor, 
 wherein the first shift register further comprises a first clock signal terminal, and a third clock signal terminal, and 
 wherein the second shift register further comprises a second clock signal terminal and a fourth clock signal terminal, 
 wherein: in each level of first repeat unit: a drain of the first clock transistor is electrically connected with the first clock signal line, a gate of the first clock transistor is electrically connected with the first control line, and a source of the first clock transistor is electrically connected with the first clock signal terminal; and 
 a drain of the third clock transistor is electrically connected with the second clock signal line, a gate of the third clock transistor is electrically connected with the first control line, and a source of the third clock transistor is electrically connected with the third clock signal terminal; and 
 in each level of second repeat unit: a drain of the second clock transistor is electrically connected with the first clock signal line, a gate of the second clock transistor is electrically connected with the second control line, and a source of the second clock transistor is electrically connected with the second clock signal terminal; and a drain of the fourth clock transistor is electrically connected with the second clock signal line, a gate of the fourth clock transistor is electrically connected with the second control line, and a source of the fourth clock transistor is electrically connected with the fourth clock signal terminal, 
 wherein: in the 2D display: during the first period of time and during the second period of time: the first control line controls the first clock transistor and the third clock transistor to be turned on, and the second control line controls the second clock transistor and the fourth clock transistor to be turned on; and 
 in the 3D display: during the first period of time: the first control line controls the first clock transistor and the third clock transistor to be turned on, and the second control line controls the second clock transistor and the fourth clock transistor to be turned off; and during the second period of time: the first control line controls the first clock transistor and the third clock transistor to be turned off, and the second control line controls the second clock transistor and the fourth clock transistor to be turned on. 
 
     
     
       7. A display panel, comprising:
 a thin film transistor (TFT) array substrate, the TFT array substrate further comprises: 
 a plurality of gate lines; 
 a first gate drive circuit, wherein the first gate drive circuit comprises m levels of first repeat units, wherein the m levels of first repeat units further comprise a first level of first repeat unit to an m-th level of first repeat unit sequentially arranged, wherein each level of the m levels of first repeat units further comprises a first shift register, wherein the first shift register further comprises a first input terminal and a first output terminal connected with a corresponding gate line; 
 a second gate drive circuit, wherein the second gate drive circuit comprises n levels of second repeat units, wherein the n levels of second repeat units further comprise a first level of second repeat unit to an n-th level of second repeat unit sequentially arranged, wherein each level of the n levels of second repeat units further comprises a second shift register, wherein the second shift register further comprises a second input terminal and a second output terminal connected with a corresponding gate line; 
 a first start signal line; a first start transistor, wherein a drain of the first start transistor is electrically connected with the first start signal line, a source of the first start transistor is electrically connected with the first input terminal of the first shift register of the first level of first repeat unit, and a gate of the first start transistor is electrically connected with a first control line; and 
 a second start transistor, wherein a drain of the second start transistor is electrically connected with the first start signal line, a source of the second start transistor is electrically connected with the second input terminal of the second shift register of the first level of second repeat unit, and a gate of the second start transistor is electrically connected with a second control line, 
 wherein in the m levels of first repeat units, among the second to m-th levels of first repeat units, the first input terminal of the first shift register in an i-th level of first repeat unit is electrically connected with the first output terminal of the first shift register in the (i−1)-th level of first repeat unit, and 
 wherein in the n levels of second repeat units, among the second to n-th levels of second repeat units, the second input terminal of the second shift register in an i-th level of second repeat unit is electrically connected with the second output terminal of the second shift register in the (i−1)-th level of second repeat unit, and 
 wherein m, n and i are positive integers, and i is greater than or equal to 2 and less than or equal to at least one of m and n, and 
 wherein a frame comprises a first period of time and a second period of time, wherein: in two dimensional (2D) display: during the first period of time and during the second period of time, the first control line controls the first start transistor to be turned on, and the second control line controls the second start transistor to be turned on; and 
 in three dimensional (3D) display: during the first period of time, the first control line controls the first start transistor to be turned on, and the second control line controls the second start transistor to be turned off; and during the second period of time, the first control line controls the first start transistor to be turned off and the second control line controls the second start transistor to be turned on, and 
 wherein the TFT array substrate further comprises a first signal line, a first transistor and a second transistor; and the first shift register further comprises a first terminal, and the second shift register further comprises a second terminal, 
 wherein: in the each level of first repeat unit, a drain of the first transistor is electrically connected with the first signal line, a gate of the first transistor is electrically connected with the first control line, and a source of the first transistor is electrically connected with the first terminal; and 
 in each level of the second repeat unit, a drain of the second transistor is electrically connected with the first signal line, a gate of the second transistor is electrically connected with the second control line, and a source of the second transistor is electrically connected with the second terminal, 
 wherein: in the 2D display: during the first period of time and during the second period of time, the first control line controls the first transistor to be turned on, and the second control line controls the second transistor to be turned on; and 
 in the 3D display: during the first period of time, the first control line controls the first transistor to be turned on, and the second control line controls the second transistor to be turned off, and during the second period of time, the first control line controls the first transistor to be turned off, and the second control line controls the second transistor to be turned on.